CN107448556B - Thin bearing speed reducer - Google Patents
Thin bearing speed reducer Download PDFInfo
- Publication number
- CN107448556B CN107448556B CN201710674402.3A CN201710674402A CN107448556B CN 107448556 B CN107448556 B CN 107448556B CN 201710674402 A CN201710674402 A CN 201710674402A CN 107448556 B CN107448556 B CN 107448556B
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- Prior art keywords
- output end
- input
- bearing
- crankshaft
- input crankshaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/2809—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
- F16H2001/323—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear comprising eccentric crankshafts driving or driven by a gearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- General Details Of Gearings (AREA)
- Retarders (AREA)
Abstract
The invention discloses a thin bearing speed reducer, and belongs to the technical field of mechanical transmission. One end of an input crankshaft is supported and installed on an output end through a group of first ball bearings, a shell is fixedly connected with the input end through bolts, two holes on a four-hole transmission part are sleeved outside two convex claws of a cycloid gear, the other two holes are sleeved outside the two convex claws of the output end, translation rollers are arranged in gaps between the convex claws and two sides of the holes, the thin bearing speed reducer adopts a one-stage speed reduction transmission mechanism of a single cycloid gear, a motor shaft can be directly connected with the input crankshaft of the speed reducer, rotation of the motor can also be transmitted to the input crankshaft through a gear or a synchronous belt and the like, the input crankshaft and the cycloid gear are supported and axially limited through ball bearings, and a third ball bearing is used between the output end and the shell for supporting and axially limiting.
Description
Technical field:
the invention relates to a thin bearing speed reducer, and belongs to the technical field of mechanical transmission.
The background technology is as follows:
the bearing speed reducer on the market at present is mainly applied to various fields such as industrial robots, metal processing machine tools, medical equipment, optical instruments, national defense and military and the like. The main user demands of the product are high precision, large bearing capacity, large transmission torque, strong anti-overturning capacity and long service life, besides, the smaller and better the axial size of the bearing speed reducer is required in many practical application occasions, the installation space can be saved, the bearing speed reducer is convenient to directly connect with a motor, and the installation scheme of the bearing speed reducer can be simplified.
The main bearing reducers currently on the domestic market are harmonic reducers of the harmonic drive (Ha Mona family company) in japan and RV type reducers of Nabtesco (nabttky company). The harmonic reducer has smaller load and torque and poorer shock resistance due to structural reasons, and can only be used in light load occasions. RV reduction gear manufacturing cost is relatively higher, and adopts two-stage transmission form more, and the whole axial volume of reduction gear is great, can not make small-size reduction gear, can't realize the application in some little spaces.
At present, the development of the bearing speed reducer is not only researched along the direction of the electromechanical integrated robot joint, but also the design and research of the thin bearing speed reducer are continuously carried out, and the application prospect of the thin bearing speed reducer is wider than that of the electromechanical integrated robot joint.
The invention comprises the following steps:
the invention aims to solve the problems, and provides a thin bearing speed reducer which adopts a one-stage speed reduction transmission mechanism of a single cycloidal gear and has the advantages of compact structure, small axial size, high precision, high transmission efficiency, long service life and low manufacturing cost.
The invention discloses a thin bearing speed reducer, which comprises an input crankshaft, a first ball bearing, an output end, a roller bearing, an input end, a cycloidal gear, a second ball bearing, rolling pins, a shell, a third ball bearing, a four-hole transmission piece, a translation roller, a first rotary framework oil seal, a second rotary framework oil seal and a third rotary framework oil seal, wherein one end of the input crankshaft is supported and installed on the output end by a group of first ball bearings, the other end of the input crankshaft is supported and installed on the input end by a group of roller bearings, a plurality of rolling pins are installed on the inner side of the input end, the outer teeth of the cycloidal gear are meshed with the rolling pins, the shell and the input end are fixedly connected through bolts, two holes on the four-hole transmission piece are sleeved outside two convex claws of the cycloidal gear, the other two holes are sleeved outside the two convex claws of the output end, and the translation roller is arranged in gaps on two sides of the convex claws and the holes.
Preferably, the input crankshaft and the cycloidal gear are supported and mounted through a group of second ball bearings, and the cycloidal gear is a single-piece cycloidal gear.
Preferably, the output end and the shell are supported and installed through a group of third ball bearings.
Preferably, the input crankshaft is provided with an eccentric boss for balancing inertia generated during movement of the cycloid gear.
Preferably, the first rotary framework oil seal is arranged between the shell and the output end, the second rotary framework oil seal is arranged between the input crankshaft and the output end, and the third rotary framework oil seal is arranged between the input crankshaft and the input end.
The invention has the beneficial effects that: the thin bearing speed reducer adopts a one-stage speed reduction transmission mechanism of a single cycloid gear, a motor shaft can be directly connected with an input crankshaft of the speed reducer, the rotation of the motor can be transmitted to the input crankshaft through a gear or a synchronous belt and the like, the input crankshaft is respectively supported on an input end and an output end through a roller bearing and a first ball bearing, an eccentric boss is arranged on the input crankshaft and used for balancing inertia generated when the single cycloid gear moves, the ball bearing is used for supporting and axially limiting between the input crankshaft and the cycloid gear, and a third ball bearing is used for supporting and axially limiting between the output end and a shell. The invention has the advantages of compact structure, small axial dimension, high precision, high transmission efficiency, long service life and low manufacturing cost.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic diagram of an exploded construction of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic view of the whole assembly of the present invention
Fig. 4 is a schematic structural view of an input crankshaft of the present invention.
Reference numerals: the input crankshaft 1, the first ball bearing 2, the output end 3, the roller bearing 4, the input end 5, the cycloid gear 6, the second ball bearing 7, the needle roller 8, the shell 9, the third ball bearing 10, the four-hole transmission member 11, the translation roller 12, the first rotating skeleton oil seal 13, the second rotating skeleton oil seal 14 and the third rotating skeleton oil seal 15.
The specific embodiment is as follows:
as shown in fig. 1 to 4, the present embodiment adopts the following technical scheme: the device comprises an input crankshaft 1, a first ball bearing 2, an output end 3, a roller bearing 4, an input end 5, a cycloidal gear 6, a second ball bearing 7, a needle roller 8, a shell 9, a third ball bearing 10, a four-hole transmission piece 11, a translation roller 12, a first rotary framework oil seal 13, a second rotary framework oil seal 14 and a third rotary framework oil seal 15, wherein one end of the input crankshaft 1 is supported and installed on the output end 3 through a group of first ball bearings 2, the other end of the input crankshaft 1 is supported and installed on the input end 5 through a group of roller bearings 4, a plurality of needle rollers 8 are installed on the inner side of the input end 5, the outer teeth of the cycloidal gear 6 are meshed with the needle roller 8, the shell 9 and the input end 3 are fixedly connected through bolts, two holes on the four-hole transmission piece 11 are sleeved outside two convex claws of the cycloidal gear 6, and the other two holes are sleeved outside the two convex claws of the output end 3, and the translation roller 12 is arranged in gaps on two convex claws and two sides of the holes.
Wherein, the input crankshaft 1 and the cycloid gear 6 are supported and installed through a group of second ball bearings 7, and the cycloid gear 6 is a single cycloid gear; the output end 3 and the shell 9 are supported and installed through a group of third ball bearings 10; the input crankshaft 1 is provided with an eccentric boss for balancing inertia generated when the cycloid gear 6 moves.
The working principle of the specific embodiment is as follows: two ends of the input crankshaft 1 are respectively supported on the input end 5 and the output end 3 by a roller bearing 4 and a first ball bearing 2, and after the input crankshaft 1 rotates, a second ball bearing 7 arranged on an eccentric circle of the input crankshaft 1 pushes a cycloid gear 6 to enable the cycloid gear 6 to mesh with a needle roller 8 arranged on the inner side of the output end 3 and do small tooth difference movement to form speed reduction; the claw on the cycloid gear 6 drives the four-hole rotating piece 11 to move, and the four-hole transmitting piece 11 transmits the movement to the output end 3 through the claw of the output end 3; the eccentric boss on the input crankshaft 1 can balance inertia generated when the cycloid gear 6 rotates; the first rotary frame oil seal 13 plays a sealing role between the housing 9 and the output end 3, the second rotary frame oil seal 14 plays a sealing role between the input crankshaft 1 and the output end 3, and the third rotary frame oil seal 15 plays a sealing role between the input crankshaft 1 and the input end 5.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A thin bearing reducer, characterized in that: the device comprises an input crankshaft (1), a first ball bearing (2), an output end (3), a roller bearing (4), an input end (5), a cycloidal gear (6), a second ball bearing (7), a needle roller (8), a shell (9), a third ball bearing (10), a four-hole transmission piece (11), a translation roller (12), a first rotary framework oil seal (13), a second rotary framework oil seal (14) and a third rotary framework oil seal (15), wherein one end of the input crankshaft (1) is supported and installed on the output end (3) through a group of the first ball bearings (2), the other end of the input crankshaft (1) is supported and installed on the input end (5) through a group of the roller bearings (4), a plurality of needle rollers (8) are installed on the inner side of the output end (3), outer teeth of the cycloidal gear (6) are meshed with the needle rollers (8), the shell (9) and the input end (5) are fixedly connected through bolts, two holes on the four-hole transmission piece (11) are sleeved outside two convex claws of the cycloidal gear (6), and two other holes are sleeved outside the two convex claws of the output end (3), and the translation roller (12) are arranged in the two convex claws and the two holes are arranged in the two convex claws; the input crankshaft (1) and the cycloid gear (6) are supported and installed through a group of second ball bearings (7); the output end (3) and the shell (9) are supported and installed through a group of third ball bearings (10).
2. A slim bearing reduction in accordance with claim 1, wherein: the cycloid gear (6) is a single cycloid gear.
3. A slim bearing reduction in accordance with claim 1, wherein: the input crankshaft (1) is provided with an eccentric boss for balancing inertia generated during movement of the cycloid gear (6).
4. A slim bearing reduction in accordance with claim 1, wherein: the working principle of the thin bearing speed reducer is as follows: the two ends of the input crankshaft (1) are respectively supported on the input end (5) and the output end (3) by a roller bearing (4) and a first ball bearing (2), and after the input crankshaft (1) rotates, a second ball bearing (7) arranged on an eccentric circle of the input crankshaft (1) pushes a cycloid gear (6) to enable the cycloid gear (6) to mesh with a needle roller (8) arranged on the inner side of the output end (3) and do small tooth difference movement to form speed reduction; the claw on the cycloid gear (6) drives the four-hole rotating piece (11) to move, and the four-hole transmitting piece (11) transmits the movement to the output end (3) through the claw of the output end (3); the eccentric boss on the input crankshaft (1) can balance inertia generated when the cycloid gear (6) rotates; the first rotary framework oil seal (13) plays a sealing role between the shell (9) and the output end (3), the second rotary framework oil seal (14) plays a sealing role between the input crankshaft (1) and the output end (3), and the third rotary framework oil seal (15) plays a sealing role between the input crankshaft (1) and the input end (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710674402.3A CN107448556B (en) | 2017-07-31 | 2017-07-31 | Thin bearing speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710674402.3A CN107448556B (en) | 2017-07-31 | 2017-07-31 | Thin bearing speed reducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107448556A CN107448556A (en) | 2017-12-08 |
| CN107448556B true CN107448556B (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710674402.3A Active CN107448556B (en) | 2017-07-31 | 2017-07-31 | Thin bearing speed reducer |
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| CN (1) | CN107448556B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019471A (en) * | 2018-01-17 | 2018-05-11 | 合肥哈工联合精密传动有限公司 | Pin type list cycloidal reducer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000097295A (en) * | 1998-09-18 | 2000-04-04 | Metto Korea Co Ltd | Inscribed type epicyclic reduction gear |
| CN104455226A (en) * | 2014-10-29 | 2015-03-25 | 浙江双环传动机械股份有限公司 | Three cycloidal gear type RV speed reducer |
| CN104696460A (en) * | 2015-01-15 | 2015-06-10 | 江苏联合传动设备有限公司 | Bearing speed reducer |
| CN104864040A (en) * | 2015-04-24 | 2015-08-26 | 江苏联合传动设备有限公司 | Speed reducer with planetary gears and cycloidal gear |
| CN204592158U (en) * | 2015-02-09 | 2015-08-26 | 成都三泉科技有限公司 | The speed reducer that hollow type eccentric swing needle roller speed changing structure combines |
| CN204884393U (en) * | 2015-08-03 | 2015-12-16 | 南京康尼机电股份有限公司 | A economical cycloidal pin wheel speed reducer of high accuracy for teaching |
| EP2960546A1 (en) * | 2014-06-27 | 2015-12-30 | Robotyka.com | Eccentric gearbox |
| CN105317933A (en) * | 2014-07-29 | 2016-02-10 | 江苏联合传动设备有限公司 | Single cycloidal gear reducer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014134765A1 (en) * | 2013-03-02 | 2014-09-12 | 浙江恒丰泰减速机制造有限公司 | Rigid internally and peripherally meshed speed reducer |
| CN104033542B (en) * | 2013-03-07 | 2016-06-08 | 鸿富锦精密工业（深圳）有限公司 | Cycloidal planetary gear speed reducer structure |
-
2017
- 2017-07-31 CN CN201710674402.3A patent/CN107448556B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000097295A (en) * | 1998-09-18 | 2000-04-04 | Metto Korea Co Ltd | Inscribed type epicyclic reduction gear |
| EP2960546A1 (en) * | 2014-06-27 | 2015-12-30 | Robotyka.com | Eccentric gearbox |
| CN105317933A (en) * | 2014-07-29 | 2016-02-10 | 江苏联合传动设备有限公司 | Single cycloidal gear reducer |
| CN104455226A (en) * | 2014-10-29 | 2015-03-25 | 浙江双环传动机械股份有限公司 | Three cycloidal gear type RV speed reducer |
| CN104696460A (en) * | 2015-01-15 | 2015-06-10 | 江苏联合传动设备有限公司 | Bearing speed reducer |
| CN204592158U (en) * | 2015-02-09 | 2015-08-26 | 成都三泉科技有限公司 | The speed reducer that hollow type eccentric swing needle roller speed changing structure combines |
| CN104864040A (en) * | 2015-04-24 | 2015-08-26 | 江苏联合传动设备有限公司 | Speed reducer with planetary gears and cycloidal gear |
| CN204884393U (en) * | 2015-08-03 | 2015-12-16 | 南京康尼机电股份有限公司 | A economical cycloidal pin wheel speed reducer of high accuracy for teaching |
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| CN107448556A (en) | 2017-12-08 |
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Effective date of registration: 20181112 Address after: 225000 Yangzhou science and Technology Park Road, Yangzhou, Yangzhou, Jiangsu Province, -10 Applicant after: JIANGSU HAGONG LIANHE PRECISION TRANSMISSION CO.,LTD. Address before: 225000 No. 12 Pioneer Park Middle Road, Hangjiang District, Yangzhou City, Jiangsu Province Applicant before: YANGZHOU YUANXIN ELECTROMECHANICAL TECHNOLOGY CO.,LTD. |
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